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Search for production of a single vectorlike quark decaying to tH or tZ in the all-hadronic final state in pp collisions at √s = 13 TeV

Year: 2024
Type: article
Abstract: A search for electroweak production of a single vectorlike T quark in association with a bottom (b) quark in the all-hadronic decay channel is presented. This search uses proton-proton collision data at √s =13 TeV collected by the CMS experiment at the CERN LHC during 2016–2018, corresponding to an integrated luminosity of 138 fb⁻¹. The T quark is assumed to have charge 2/3 and decay to a top (t) quark and a Higgs (H) or Z boson. Hadronic decays of the t quark and the H or Z boson are reconstructed from the kinematic properties of jets, including those containing b hadrons. No deviation from the standard model prediction is observed in the reconstructed tH and tZ invariant mass distributions. The 95% confidence level upper limits on the product of the production cross section and branching fraction of a T quark produced in association with a b quark and decaying via tH or tZ range from 1260 to 68 fb for T quark masses of 600–1200 GeV.
DOI: 10.3929/ethz-b-000709950
Authors: CMS Collaboration, Hayrapetyan, Aram, Erdmann, Wolfram, Aarrestad, Thea K., Androsov, Konstantin, Backhaus, Malte, Calandri, Alessandro, Cazzaniga, Cesare, Datta, Kaustuv, De Cosa, Annapaola, Dissertori, Günther, Dittmar, M., Donegà, Mauro, Eble, Florian, Galli, Massimiliano, Gedia, Krunal, Glessgen, Franz, Grab, Christophorus, Hits, Dmitry Alexandrovich, Lustermann, Werner, Lyon, Anne-Mazarine, Manzoni, Riccardo Andrea, Marchegiani, Matteo, Marchese, Luigi, Martin Perez, Cristina, Mascellani, Anna, Nessi-Tedaldi, Francesca, Pauss, Felicitas, Perovic, Vasilije, Pigazzini, Simone, Reissel, Christina, Reitenspiess, Thomas, Ristic, Branislav, Riti, Federica, Ruini, D., Seidita, Roberto, Steggemann, Jan, Valsecchi, Davide, Wallny, Rainer, et al.
Language: English
Open Access status: green
OpenAlex ID: W6928811645
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